10 Incredible Human Body Facts You Probably Didn’t Know

We all know our body is quite an amazing design of nature but check out these totally amazing human body facts that you probably didn’t know!

10 Stomach
The human stomach is filled with a digestive acid that is so strong it can actually melt zinc and our stomach lining needs to renew its lining cells extremely quickly so that the acid does not have time to eat through it.

9 Human Bones
Believe it or not, human bones are four times stronger than concrete, just 1 cubic inch of human bone can withstand a weight of 8.6 tones before it will crush.

8 Body Heat
The human body generates plenty of heat, in fact in just thirty minutes we make enough heat to boil four pints of water.

7 Human Saliva
Here’s a mouth watering fact, in our life time each of us produces enough saliva to fill two Olympic size swimming pools.

6 Lungs
The average human lung has more than 300,000 minute blood vessels called capillaries which if laid out would have a total length of 1,500 miles in length.

5 Testicles
Every man can produce 10 million new sperm cells each day from his testicles which means each man could repopulate the entire planet after just six months. Testicles are also the only part of the human body which are naturally refrigerated at a lower temperature than the rest of our body.

4 Ovaries
The female ovary holds a reserve of up to 50,000 eggs yet in her lifetime only 400 will ever get a chance to become fertilized.

3 Heart
The human heart generates its own electrical pulse so when it is removed from the body it will continue to beat for a limited amount of time.

2 Hands
The human hand amazing sensitivity, in just one square inch we have nine feet of blood vessels and more than 600 pain sensors as well as 75 pressure sensors and 36 hear sensors.

1 Nose
The human nose has an area of specialized cells responsible for smelling (part of the olfactory system). It has a huge memory, in fact the average person can remember as much as 50,000 different smells which can even trigger lifetime memories from as far back as early childhood.